Atomic Structure (30Jan2025)

Which of the following subatomic particles has a neutral or positive charge and is located in the nucleus?

• Neutrons

• Electrons

• Protons

• Anion

• Cation

Which of the following subatomic particles is not considered in the Mass Number for an atom or ion? Select all that apply.

• Neutrons

• Electrons

• Protons

• Anion

• Cation

Which of the following subatomic particles are not considered in the Atomic Number for an atom or ion? Select all that apply.

• Neutrons

• Electrons

• Protons

The atomic number is the number of ______ in an atom.

• Neutrons

• Electrons

• Protons

• Anions

The net charge of this atom or ion is ____.

• 0

• neutral

• -2

• +2

Tags

NGSS.MS-PS1-1

The number of valence electrons in this atom or ion is ____.

Tags

NGSS.MS-PS1-1

The number of valence electrons in this atom or ion is ____.

Tags

NGSS.HS-PS1-1

The number of non-valence electrons in this atom or ion is ____.

Tags

NGSS.MS-PS1-1

The #n for the atom or ion represented in this drawing is the same as what we would get by using the average mass number from the Periodic Table.

• true

• false

• not enough info

• the atom/ion represented in the drawing is not on the Periodic Table

Tags

NGSS.MS-PS1-1

What is the role of valence electrons in an atom?

• They are in the innermost shell.

• They determine chemical properties.

• They are not involved in chemical reactions.

• They are always positively charged.

Tags

NGSS.MS-PS1-5